468 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



the way up would be to give exactly such a point of inflection as he 

 found. 



One check on the accuracy may be obtained from the known slope 



TABLE VIII. 

 Data for the Equilibrium Curve Ice I- Water. 



at 0°, calculated by Clapeyron's equation from the known latent 

 heat and the change of volume. This slope is given by the equation 



dr 

 dp 



a77" 



Using the following values : AF = 0.0900, t = 273.1, A^= 79.82 

 gm. cal., 1 gm. cal. = 42.66 kgm. cm., we find 



